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Today in the Middle Ages: May 9, 1386

Submitted by Ursula on Tue, 2006/05/09 - 15:08. 1301 CE to 1400 CE | English | Nautical | Portuguese | Today in the Middle Ages
On May 9, 1386, England and Portugal signed the Treaty of Windsor, a pledge of mutual assistance which remains in effect to this day.

The following year, the alliance was strengthened when Phillipa, daughter of John of Gaunt, Duke of Lancaster, married João I of Portugal. Their son was Prince Henry the Navigator, who inaugurated Portugal's Age of Exploration.

The two countries traded extensively, Portugal exporting wine and importing English cloth and fish.

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